参数资料
型号: W29GL128CH9T
厂商: Winbond Electronics
文件页数: 21/67页
文件大小: 0K
描述: IC FLASH 128MBIT 90NS 56TSOP
标准包装: 96
格式 - 存储器: 闪存
存储器类型: FLASH
存储容量: 128M(16M x 8,8M x 16)
速度: 90ns
接口: 并联
电源电压: 2.7 V ~ 3.6 V
工作温度: -40°C ~ 85°C
封装/外壳: 56-TFSOP(0.724",18.40mm 宽)
供应商设备封装: 56-TSOP
包装: 管件
W29GL128C
7.3
Enhanced Sector Protect/Un-protect
This device is set from the factory in the Individual Protection mode of the Enhanced Sector Protect
scheme. The user can disable or enable the programming or erasing operation to any individual sector
or whole chip. The figure below helps describe an overview of these methods.
The device defaults to the Individual mode and all sectors are unprotected when shipped from the
factory.
The following flow chart shows the detailed algorithm of Enhanced Sector Protect:
Start
Individual Protection
Mode
(Default)
IPB=0
Set IPB
Lock Bit
IPB=1
IPB Lock bit Unlocked
IPB is Changeable
IPB lock Bit locked
All IPB not changeable
Dynamic Write Protect bit
(DPB)
DPB=0 Sector Protect
DPB=1 Sector Unprotect
DPB 0
DPB 1
DPB 2
.
.
.
.
DPB + n
Sector Array
SA 0
SA 1
SA 2
.
.
.
.
SA + n
Individual Protect bit
(IPB)
IPB=0 Sector Protect
IPB=1 Sector Unprotect
IPB 0
IPB 1
IPB 2
.
.
.
.
IPB + n
Figure 7-1
Enhanced Sector Protect/Un-protect IPB Program Algorithm
Publication Release Date: August 2, 2013
15
Revision H
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